Originally Posted by kaiv
There's a market if you want to produce something simple and effective.
The Cantrel kit is nice but when I look at it I don't see $500+
Yup but when you look at what's available, they are the best bang for the buck. For a car that's supposedly tracked a lot (and I do see a lot of E9x M3's at track days), I'm amazed at what little options there are for parts that are very beneficial at the track (larger oil cooler anyone??).
OEM M3 GTS Splitter/Wing/Harness Bar/Rear Seat Delete, Ohlin R&T, Brembo BBK, Akrapovic GT4, Alekshop Oil Cooler, ESS Tune/Pulley, Recaro SPG, 18" BBS FI, CAE Shifter, Vorschlag Camber Plates, Bimmerworld Toe-Links/End-Links/Motor Mounts, RD Sport Front Sway, Turner Solid Subframe/Diff Bushings, Awron Gauge.